Warm Up 9/6/13 Turn in day! You should have 6! What happens to a solid object with a density that is less than water when it is placed in water? A.The.

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Presentation on theme: "Warm Up 9/6/13 Turn in day! You should have 6! What happens to a solid object with a density that is less than water when it is placed in water? A.The."— Presentation transcript:

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Warm Up 9/6/13 Turn in day! You should have 6! What happens to a solid object with a density that is less than water when it is placed in water? A.The object sinks about halfway into the water. B.The object displaces a quantity of water greater than its volume. C.The object settles to the bottom of the water. D.The object floats on top of the water.

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Warm Up 9/6/13 Turn in day! Don’t forget your name! What happens to a solid object with a density that is less than water when it is placed in water? A.The object sinks about halfway into the water. B.The object displaces a quantity of water greater than its volume. C.The object settles to the bottom of the water. D.The object floats on top of the water.

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Warm Up 9/6/13 Turn in day! You should have 5! A controlled experiment A.is not always possible. B.contains a test group. C.has only one variable. D.All of the above

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Warm Up 9/6/13 Turn in day! Don’t forget your name! A controlled experiment A.is not always possible. B.contains a test group. C.has only one variable. D.All of the above

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Today’s Work Session Reflection 2.Finish Circle Map (poster or individual) 3.Finish Science World assignment 4.Work on Testable Questions (complete the first assignment if you don’t know how to do the other two)

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3-2-1 TOTD Three things you know about scientific methods Two questions you still have about this topic One question you would like to answer in a scientific investigation (it needs to be something you are interested in and can do – you are going to use this question for other assignments)

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Lunch Line Expectations Line up SILENTLY Line up in a SINGLE FILE LINE Line up and KEEP YOUR HANDS & FEET TO YOURSELF There AND back If you can’t handle this, then you will have ASSIGNED SEATS at lunch

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Test Today Use the first ten minutes of class to ask questions and review You can write on the test After the test, read the article on explosions and complete the guided reading worksheet If you finish all of that, you can read or work on something for another class

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Quiz Today Use the first ten minutes of class to ask questions and review You can write on the quiz After the quiz you need to work on your Science World assignment If you are finished with that, you can read or work on something for another class 2 nd & 4 th – we will finish posters tomorrow

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Warm Up 9/4/13 Which of the following is NOT the result of a chemical change? A.soured milk B.ground flour C.rusted metal D.digested food

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Warm Up 9/4/13 Which of the following is NOT the result of a chemical change? A.soured milk B.ground flour C.rusted metal D.digested food

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Warm Up 9/3/13 What is the best way to tell if a chemical change has taken place? A.The matter changes color. B.The change is reversible. C.A mixture separates into layers. D.The composition changes.

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Warm Up 9/3/13 What is the best way to tell if a chemical change has taken place? A.The matter changes color. B.The change is reversible. C.A mixture separates into layers. D.The composition changes.

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Physical and Chemical Changes Properties are what a substance HAS; changes are what a substance DOES In other words: properties tend to be adjectives and descriptive; changes tend to be verbs and active

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Evidence Signs of a physical change include changes in state, shape, or form but not composition Physical changes are USUALLY reversible Sign of a chemical change include the release of light or heat The substance may look very different Chemical changes are USUALLY irreversible Bubbling & color change can be tricky

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You try it! Name That Change Card Sort – once you have the correct info, copy into your notebook On a clean page, create a Double Bubble Map comparing & contrasting the two changes Remember: similarities in the middle, differences on the outside, and for every point, you need a counterpoint

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Warm Up 9/3/13 Which of the following is a good way to analyze data? A.Organize it into charts and graphs, and do calculations if necessary. B.Check it over, and then copy it. C.Put it away for a few months to see if it makes more sense later. D.Try to find some way to make it support your hypothesis.

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Warm Up 9/3/13 Which of the following is a good way to analyze data? A.Organize it into charts and graphs, and do calculations if necessary. B.Check it over, and then copy it. C.Put it away for a few months to see if it makes more sense later. D.Try to find some way to make it support your hypothesis. NEVER!!!

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Drawing Conclusions Ask yourself: Do the data support my hypothesis? Did what I think would happen, happen? Yes? You or others may want to try again to verify the results No? Check for errors and try again Still no? You may have to rethink or reject your hypothesis

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Warm Up 8/30/13 *NOT a turn in day A chemical change takes place during a laboratory investigation of the properties of magnesium. Which of the following may have been observed? A.Magnesium burns in the presence of oxygen. B.Magnesium melts at 649°C. C.Magnesium becomes malleable when it is heated. D.Magnesium conducts an electric current.

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Warm Up 8/30/13 *NOT a turn in day A chemical change takes place during a laboratory investigation of the properties of magnesium. Which of the following may have been observed? A.Magnesium burns in the presence of oxygen. B.Magnesium melts at 649°C. C.Magnesium becomes malleable when it is heated. D.Magnesium conducts an electric current.

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Project Turn-In Make sure sheet is COMPLETE! Don’t forget to complete the section about your process! Make sure your name is on your bottle.

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Warm Up 8/30/13 *NOT a turn-in day Complete the “Pretest” side of the graphic organizer packet You have 2 CRCT questions – save them in a safe place to add to next week’s set. Process Skills project due dates pushed up Quiz on the scientific method next WEDNESDAY Short Observations video

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Warm Up 8/27/13 Which of the following statements about chemical properties is true? A.They can be observed when the identity of a substance changes. B.They can always be observed without changing the identity of a substance. C.They are easier to observe than physical properties. D.They are the properties that are most useful in identifying a substance.

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Warm Up 8/27/13 Which of the following statements about chemical properties is true? A.They can be observed when the identity of a substance changes. B.They can always be observed without changing the identity of a substance. C.They are easier to observe than physical properties. D.They are the properties that are most useful in identifying a substance.

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Dunkin’ For Density Make a film canister float, suspend, and sink Must have SOMETHING in the canister Find MASS on the balance Find VOLUME using displacement (see page 40 in science book) Calculate DENSITY Complete lab sheet (work with a group, but each person must turn in his/her own sheet)

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Volume by Displacement Fill a graduated cylinder to a known amount (example: 100 ml) Put your object in the cylinder (film canisters must be filled with water) Record the new height of the water (example: 137 ml) Subtract to find volume (example: 137 – 100 = 37 ml)

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Warm Up 8/27/13 Before asking questions, what is a scientist likely to do? A.make answers that work B.make necessary arrangements C.make observations D.make reservations

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Warm Up 8/27/13 Before asking questions, what is a scientist likely to do? A.make answers that work B.make necessary arrangements C.make observations D.make reservations

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Agenda & Homework Observation & Inference Notes Choice 1: work on Science World assignment (due Friday) Choice 2: work on Science Process Skills mini- projects (first one due Friday) Choice 3: finish Skills Tutor pretests Homework: catch up on work (especially online – if you don’t have a computer, then work on the offline work at home)

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Inference Conclusions or deductions based on observations. The process of drawing a conclusion from given evidence. Using what you KNOW together with what you SEE to make an EXPLANATION or PREDICTION Practice: Observations: I hear people screaming I smell cotton candy, popcorn, and hamburgers I see a lot of people Inference = ?

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Look at these two sets of animal tracks. List 3 OBSERVATIONS Make an INFERENCE

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Now what do you think? Make 3 OBSERVATIONS Make an INFERENCE

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Now what do you think? Make 3 OBSERVATIONS Make an INFERENCE

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Source of graphic:

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Warm Up 8/26/13 Which physical property can be used to classify oxygen, helium, propane, and hydrogen as being similar? A. Flammability B. State C. Reactivity D. Malleability

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Warm Up 8/26/13 Which physical property can be used to classify oxygen, helium, propane, and hydrogen as being similar? A. Flammability B. State C. Reactivity D. Malleability

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Warm Up 8/26/13 What are scientific methods? A.The steps scientists use to answer questions and solve problems B.The steps scientists use to look up the answers to questions C.The steps scientists use to ensure a hypothesis is supported D.The steps scientists use to answer questions and cause problems

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Warm Up 8/26/13 What are scientific methods? A.The steps scientists use to answer questions and solve problems B.The steps scientists use to look up the answers to questions C.The steps scientists use to ensure a hypothesis is supported D.The steps scientists use to answer questions and cause problems

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Agenda & Homework Brief notes on background research Choice 1: work on Science World assignment (due Friday) Choice 2: work on Science Process Skills mini- projects (first one due Friday) Choice 3: finish Skills Tutor pretests Homework: catch up on work (especially online – if you don’t have a computer, then work on the offline work at home)

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Background Research Necessary so that you know how to design and understand your experiment. Identify the keywords in the testable question(s) Remember your “5 Ws and H” (who, what, why, when, where, how) List mathematical formulas or equations Research the history of similar experiments or inventions Network – who do you know that could help?